Converting from T to () => T

[allanrenucci]

With scalac you can do

val foo = 1
val bar: () => Int = foo _

dotc reject this code snippet. Should we support it under -language:Scala2 and emit a migration warning?

[allanrenucci]

In the same style, found in the community build:

class Test {
  def foo(x: => Int) = bar(x _)
  def bar(x: () => Int) = ???
}

[allanrenucci]

This pattern is used all over the place in scalatest